rs200652879

chr7-66639116-C-Gchr7-66639116-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1 PM2 PP5_Moderate

The NM_153033.5(KCTD7):c.754C>G(p.Leu252Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: KCTD7 NM_153033.5 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 5.59

Genes affected

KCTD7 (HGNC:21957): (potassium channel tetramerization domain containing 7) This gene encodes a member of the potassium channel tetramerization domain-containing protein family. Family members are identified on a structural basis and contain an amino-terminal domain similar to the T1 domain present in the voltage-gated potassium channel. Mutations in this gene have been associated with progressive myoclonic epilepsy-3. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Jan 2011]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM1: In a chain BTB/POZ domain-containing protein KCTD7 (size 288) in uniprot entity KCTD7_HUMAN there are 29 pathogenic changes around while only 4 benign (88%) in NM_153033.5
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 7-66639116-C-G is Pathogenic according to our data. Variant chr7-66639116-C-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 520953.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KCTD7	NM_153033.5	c.754C>G	p.Leu252Val	missense_variant	4/4	ENST00000639828.2
KCTD7	NM_001167961.2	c.754C>G	p.Leu252Val	missense_variant	4/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KCTD7	ENST00000639828.2	c.754C>G	p.Leu252Val	missense_variant	4/4	2	NM_153033.5	A1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 29, 2016

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.38
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.080
Cadd	Benign	22
Dann	Uncertain	1.0
DEOGEN2	Benign	0.031	T;.;.
Eigen	Uncertain	0.65
Eigen_PC	Pathogenic	0.67
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.91	D;D;D
M_CAP	Benign	0.075	D
MetaRNN	Uncertain	0.44	T;T;T
MetaSVM	Uncertain	-0.24	T
MutationAssessor	Benign	1.1	L;.;L
MutationTaster	Benign	0.98	N
PrimateAI	Uncertain	0.76	T
Polyphen		0.99	D;.;.
Vest4		0.72
MutPred		0.27		Loss of helix (P = 0.1299);Loss of helix (P = 0.1299);Loss of helix (P = 0.1299);
MVP		0.83
ClinPred		0.83	D
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.18
gMVP		0.62

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs200652879; hg19: chr7-66104103;